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<blockquote data-quote="friedmud" data-source="post: 86356" data-attributes="member: 11427">Well... I took my camera into my dealer and they said that they would replace it... but I got their floor model and took a &quot;dust shot&quot; with it... and it was even _worse_ than my camera!&nbsp; So... no reason to replace (might just get one worse).&nbsp; They said they could send it in for cleaning... but it would be a month before I got it back.&nbsp; So, I told them I would use my Giottos Rocket Blower and see if it would do any good.&nbsp; I just got through cleaning the sensor with the rocket blower and thought I would share my results:(all photos take using 24-70G at 70mm at f/22 focused near infinity on a piece of paper.&nbsp; Disregard the &quot;yellowish splotch&quot; it was some junk on the paper...)First the &quot;before&quot; shot:<a href="http://farm9.staticflickr.com/8047/8129213989_31d0230b70_o.jpg" target="_blank">http://farm9.staticflickr.com/8047/8129213989_31d0230b70_o.jpg</a>Next, the &quot;after&quot; shot:<a href="http://farm9.staticflickr.com/8474/8129240630_be4e27ba8b_o.jpg" target="_blank">http://farm9.staticflickr.com/8474/8129240630_be4e27ba8b_o.jpg</a>This is after repeated (10+) mirror up cleaning sessions with the rocket blower.&nbsp; When I first took at look at the sensor I could visibly see the dust (mostly in the bottom left corner when looking at the sensor).&nbsp; I could see it getting blown away with the rocket blower.&nbsp; As you can see, there are still a few small spots... but they won't be visible at anything other than f/22 (where I don't shoot much).&nbsp; I could keep blowing, but it's just as likely that I will continue to blow around the dust instead of really getting it off.&nbsp; To get that last bit off I would need to either send it in or do a wet cleaning (which I'm NOT doing on a brand new $2100 piece of equipment.&nbsp; I understand that many people do... it's just not for me).So the verdict?&nbsp; It is definitely _dust_.&nbsp; It is not oil (at least on my sensor) and it can be effectively dealt with in a &quot;non-contact&quot; way.&nbsp; I'm happy with the result and I'll just be diligent about blowing off my sensor every now and again.&nbsp; I hope that eventually it settles down a bit... but I can definitely live with this one &quot;issue&quot; for everything else that is awesome about this camera.It is a huge relief to know that I can deal with this on my own and I don't need to send my camera anywhere....</blockquote>

[QUOTE="friedmud, post: 86356, member: 11427"] Well... I took my camera into my dealer and they said that they would replace it... but I got their floor model and took a "dust shot" with it... and it was even _worse_ than my camera! So... no reason to replace (might just get one worse). They said they could send it in for cleaning... but it would be a month before I got it back. So, I told them I would use my Giottos Rocket Blower and see if it would do any good. I just got through cleaning the sensor with the rocket blower and thought I would share my results: (all photos take using 24-70G at 70mm at f/22 focused near infinity on a piece of paper. Disregard the "yellowish splotch" it was some junk on the paper...) First the "before" shot: [url]http://farm9.staticflickr.com/8047/8129213989_31d0230b70_o.jpg[/url] Next, the "after" shot: [url]http://farm9.staticflickr.com/8474/8129240630_be4e27ba8b_o.jpg[/url] This is after repeated (10+) mirror up cleaning sessions with the rocket blower. When I first took at look at the sensor I could visibly see the dust (mostly in the bottom left corner when looking at the sensor). I could see it getting blown away with the rocket blower. As you can see, there are still a few small spots... but they won't be visible at anything other than f/22 (where I don't shoot much). I could keep blowing, but it's just as likely that I will continue to blow around the dust instead of really getting it off. To get that last bit off I would need to either send it in or do a wet cleaning (which I'm NOT doing on a brand new $2100 piece of equipment. I understand that many people do... it's just not for me). So the verdict? It is definitely _dust_. It is not oil (at least on my sensor) and it can be effectively dealt with in a "non-contact" way. I'm happy with the result and I'll just be diligent about blowing off my sensor every now and again. I hope that eventually it settles down a bit... but I can definitely live with this one "issue" for everything else that is awesome about this camera. It is a huge relief to know that I can deal with this on my own and I don't need to send my camera anywhere.... [/QUOTE]

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